Because the hype will always outdistance the utility, on average.

Yes, you'll get peaks where innovation takes everyone by surprise.

Then the salesbots will pivot, catch up, and ingest the innovation into the pitch machine as per usual.

So yes, there is genuine innovation and surprise. That's not what is being discussed. It's the hype that inevitably overwhelms the innovation, and also inevitably pollutes the pool with increasing noise. That's just human nature, trying to make a quick buck from the new-hotness.